Hacking a BFL Jalapeno to 32GH and beyond....(???) - page 16.

elaramus

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So I got a little crazy this weekend and took both of my Jalapenos from 3 chips each to 6 chips each.

The results are below
http://imgur.com/a/FzKPM

In the linked images, BFL3 and BFL4 are my Jalapenos... the others are Chilis

The stock 6A adapter gave out after the 4th chip, so I cut the plug off and wired it to a PCI-E cable right off my computer's power supply. No issues with power after the mod. Adding 4 chips had both Jalapenos up to over 60C. The 5th chip needed additional cooling (up to 78C) and the 6th chip put the temps off the map.

I found applying thermal compound between the aluminum heatsink plate and the Jalapeno board then placing an active cooler on top (running the Jalapeno upside down) provided exceptional results... Both are hashing over 23Gh/s

Now I'm contemplating chip 7.... Grin

P.S Temps used: preheat the area with the wand for 10 seconds, then 90 seconds @ 460C with the wand 1/4 inch above the chip. The chip will float as the solder balls melt (DON"T FREAK OUT) as the remaining balls melt and adhere to one another the chip will realign itself. Patience was the key to my success. Sometimes it took a second heat blast to get the chip to recognize. Altogether I've placed 10 chips on Jalapenos this weekend

lightfoot

legendary

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I fix broken miners. And make holes in teeth :-)

Hm, that's an interesting thought. I keep thinking about setting up a Wiki system on my home servers but just never get around to it.

I'd be happy to transfer the key points from this thread over so we can get this info out.

Thanks!
C

MagnaGen

newbie

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Quote from: Brassguy on December 10, 2013, 11:51:43 PM

https://db.tt/WuN8CdkW

Just some temp readings from various points...

Someone should make a wiki with all of this information, I can host it and set it up if someone else is willing to gather all the information and instructions.

Also lightfoot, PM me I would like to donate some chips to your project

thanks

Brassguy

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https://db.tt/WuN8CdkW

Just some temp readings from various points...

lightfoot

legendary

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I fix broken miners. And make holes in teeth :-)

Quote from: Brassguy on December 10, 2013, 06:45:53 PM

Quote from: lightfoot on December 10, 2013, 06:05:52 PM

It's a start. If I get my new jallies I will try for a bit more. My current one seems to be confused.

C

Just an fyi light.... when I had the one chip not working on my jally the reported hashrate was around 11gh after reflow about 15gh... simple enough. However, the temperature hasn't changed one bit with an addition of 4gh.... and... when it was hashing at reported rate of 11gh it was actually the same amount of shares ~100 as before any chips were added at 8.3gh. I ran it for 6 days that way btw... weird.

Well, the rubber meet road question is how many bitcoin are you making? I am apparently doing about a penny a day now with the latest difficulty with 20gh, so as long as you're making the money it's all good.

C

Brassguy

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Quote from: lightfoot on December 10, 2013, 06:05:52 PM

It's a start. If I get my new jallies I will try for a bit more. My current one seems to be confused.

C

Just an fyi light.... when I had the one chip not working on my jally the reported hashrate was around 11gh after reflow about 15gh... simple enough. However, the temperature hasn't changed one bit with an addition of 4gh.... and... when it was hashing at reported rate of 11gh it was actually the same amount of shares ~100 as before any chips were added at 8.3gh. I ran it for 6 days that way btw... weird.

lightfoot

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I fix broken miners. And make holes in teeth :-)

It's a start. If I get my new jallies I will try for a bit more. My current one seems to be confused.

C

glendall

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Wow good work on the hacking guys. a 18+GH Jalapeno is a sweet overclock. Nice work...

lightfoot

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I fix broken miners. And make holes in teeth :-)

Quote from: Brassguy on December 09, 2013, 11:37:15 AM

Here you go lightfoot...

https://dl.dropboxusercontent.com/u/37765158/image_01.png

I'm pretty sure this is exact... please let me know if you find any discrepancy!

I just ordered these from newegg http://www.newegg.com/Product/Product.aspx?Item=N82E16835708009 for cooling the vrms...

That does not match my layout at all. Weird.

C

lightfoot

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I fix broken miners. And make holes in teeth :-)

Quote from: Drug5bitz on December 10, 2013, 04:40:01 PM

Quote from: lightfoot on December 10, 2013, 04:12:20 PM

Wait, that chip you blew up is a voltage regulator? I thought the six FETs were it, or is that some sort of LM317 for the fans?

And is that big box thing damaged as well?

C

Yes, notice the hole in the chip. The number on it was ST1S10, on mouser it comes up as a voltage reg. This particular jala is the one that took out the same power supply. When I used a good power supply it blew that chip.... doesn't necessarily mean that's the problem though....

The blown caps are on the blocks DC output side, everything else looks fine. I'm not sure what you mean by big box thing? If you mean the USB controller chip, I ordered a couple. I have 2 jala's that wont register in windows... trust me I researched it on two PC's and 3 different miner programs. Again everything is just to the best of my knowledge, I'm out on a string with some of this stuff.

The 2 mouser chips I got ordered are

ST1S10 (Voltage reg)
FT232HQ (FTDI driver chip for USB)

Yes I'm in the USA unfortunately.

What the hell is that? U15 is the power supply from 12 volts to 3.3 volts. That's the control bus power for the chips (the hash engines run on the 1 volt supply). Wow.

You had a cool failure. Swap the parts out, that chip first. And use a fuse inline with your power supply to keep blowing things to a min. Maybe a 4 amp fuse or something.

C

Drug5bitz

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Quote from: lightfoot on December 10, 2013, 04:12:20 PM

Wait, that chip you blew up is a voltage regulator? I thought the six FETs were it, or is that some sort of LM317 for the fans?

And is that big box thing damaged as well?

C

Yes, notice the hole in the chip. The number on it was ST1S10, on mouser it comes up as a voltage reg. This particular jala is the one that took out the same power supply. When I used a good power supply it blew that chip.... doesn't necessarily mean that's the problem though....

The blown caps are on the blocks DC output side, everything else looks fine. I'm not sure what you mean by big box thing? If you mean the USB controller chip, I ordered a couple. I have 2 jala's that wont register in windows... trust me I researched it on two PC's and 3 different miner programs. Again everything is just to the best of my knowledge, I'm out on a string with some of this stuff.

The 2 mouser chips I got ordered are

ST1S10 (Voltage reg)
FT232HQ (FTDI driver chip for USB)

Yes I'm in the USA unfortunately.

lightfoot

legendary

Activity: 3164

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I fix broken miners. And make holes in teeth :-)

Oh and um, that cap damage took more than 72 watts to do. I think it shorted the mains to the output. Check the other side, see if any of the caps there are blown.

I just opened my supply, normal and somewhat stupid, nothing unusual there. I'll tear the one I have coming apart; are you in the US BTW?

C

lightfoot

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Activity: 3164

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I fix broken miners. And make holes in teeth :-)

Wait, that chip you blew up is a voltage regulator? I thought the six FETs were it, or is that some sort of LM317 for the fans?

And is that big box thing damaged as well?

C

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Well, in the meantime I wired my Jally into my rather inexpensive (ie: cheap) ATX power supply.

I didn't want to play with the 12 volt 4 pin molex, so I took three of the yellow 12v wires (18 gauge each, blah!), cut them, spliced them together to the BFL cable (16 gauge, nicer, but blah), soldered, used shrink wrap to cover, and fired it up.

The power supply is reading 12 volts on the unloaded lines, but the Jally was reading 11.5 volts at idle. Which means a pretty hefty voltage drop, but most of it is in the BFL cable. I'll deal.

Up and hashing. I'll take a look inside my power supply in a few days to see what it can tell me. Man you do need a pretty beefy cable BTW.

Update: Ooops. Hit 80c, apparently lower voltage=lower noctura fan speed. Crud, I have the external fan back on it, we'll see what happens. Might have to take the sides off again, drat.

C

Drug5bitz

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Here you see the hole I blew in the voltage reg..... and the FTDI chip which controls the USB FT232HQ about $5.

In this pic you can see 6 mosfets on this side.

Careful guys apparently Bitcoin mining is as dangerous as gold mining.

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Quote from: Drug5bitz on December 10, 2013, 01:55:33 PM

You're referring to the barrel plug correct? I've got 4 power blocks just opened the dead one........ smells horrible, covered in soot and the 2 caps are blown. One of them has a sizable hole in it....... I'm so beyond pissed right not it's not funny..... I void my warranty so BFL can shock me to death after blowing up my miners with shitty hardware. Or the idea that 120V traveled up my usb onto my MOBO. So the point I'm at BFL may have caused my miner and PC take down with chinese power blocks. 3 greatest fears in one, dead PC, chinese products, power blocks. That order, I'm prolly venting at this point but I also have one power block that causes just the power LED to flash slowly.... I don't even understand anymore.... Sad

Can you post a pic? I'm sorry it went foom.

Does the slow flasher work with a good supply?

C

arekm

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Any (EU or to EU) chips sellers available? Want to try adding 4 chips to jaly (or fry them ;-)

Drug5bitz

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Activity: 123

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You're referring to the barrel plug correct? I've got 4 power blocks just opened the dead one........ smells horrible, covered in soot and the 2 caps are blown. One of them has a sizable hole in it....... I'm so beyond pissed right not it's not funny..... I void my warranty so BFL can shock me to death after blowing up my miners with shitty hardware. Or the idea that 120V traveled up my usb onto my MOBO. So the point I'm at BFL may have caused my miner and PC take down with chinese power blocks. 3 greatest fears in one, dead PC, chinese products, power blocks. That order, I'm prolly venting at this point but I also have one power block that causes just the power LED to flash slowly.... I don't even understand anymore.... Sad

lightfoot

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Activity: 3164

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I fix broken miners. And make holes in teeth :-)

Quote from: Drug5bitz on December 10, 2013, 01:15:47 PM

I'll have to read into that, I'm inn the US however. Just ordered off of mouser FT232HQ Which is the USB controller chip, and ST1S10 which appears to be the voltage reg I blew up. Lightfoot have you had no problems with your power block? I'm pretty convinced they're complete garbage. If I have luck changing out a few components I will let you'll know. Prolly start buying bad jalas then. I'm off to cry I believe my processor died in my main rig as well. Apparently 2 years at 4.7 Ghz can do that, now to get a 9590.

I think there may be another place we might want little sinks, I'll report back as I just got a new IR thermometer.

P.S. if anyone has a AM3+ CPU I could borrow to test my MOBO that would be cool. Not expecting anything but worth a try.

No problems yet but it's hot. I have a fan pointing at it, but I think I might be cutting it's cord tonight and hard-wiring it into the ATX. ATX had flimsy wires though, and I am concerned about voltage drop.

Try swapping the USB chip. Unfortunately the problem with buying bad jallies is that people seem to think they are like little golden nuggets.

Hey, do you see 120 volts on the ring to ground on your power supply?

C

Drug5bitz

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I'll have to read into that, I'm inn the US however. Just ordered off of mouser FT232HQ Which is the USB controller chip, and ST1S10 which appears to be the voltage reg I blew up. Lightfoot have you had no problems with your power block? I'm pretty convinced they're complete garbage. If I have luck changing out a few components I will let you'll know. Prolly start buying bad jalas then. I'm off to cry I believe my processor died in my main rig as well. Apparently 2 years at 4.7 Ghz can do that, now to get a 9590.

I think there may be another place we might want little sinks, I'll report back as I just got a new IR thermometer.

P.S. if anyone has a AM3+ CPU I could borrow to test my MOBO that would be cool. Not expecting anything but worth a try.

Topic: Hacking a BFL Jalapeno to 32GH and beyond....(???) - page 16. (Read 54329 times)